Improvement in cooking-stoves



UNITED STATES lPATENT OFFICE".

BENJAMIN F. JOHNSON, OF TROY,'NEW YORK.

IMPROVEMENT IN' COOKING-STOVES.

Specification forming part of Letters Patent No. 92,055, dated June 29,1869.

To all whom it may concern:

Be it known that I, BENJAMIN F. JOHNSON, ofthe city of Troy, county ofRensselaer, and State of New York, have invented a new and usefulImprovement in Cooking'Stoves having tanks for heating waterattached;-and

The object and scope of my said invention y is to be found in soconstructing theback and the iue or tlues of a cooking-stove, inconnection with a water-tank, as to be able to pass the escapingproducts of combustion in such a manner as to heat the oven throughtheback ot' the same, or to sendsuch products` against the side ofthewater-tank to heat the water therein; or to so direct the saidproducts,heated air, Src., as to heat the oven and tank at the same time, therebyadapting the use of the stove and water-tank to any desirable operation,either for heating the oven or the water. The improvement, asrepresented in the accompanying drawings, is set out asv applied to athree-due stove, but it is neither my purpose nor intention to limit theapplication of my said invention to stoves of any particular number 'offlues, as the same may be applied to stoves of one or more iues.

I apply my improvement to cooking-stoves by means of the form andconstruction of the back of the stove, which may be composed of a singlerecessed plate or of several plates, forming recesses for the dues andrests for the water-tank.

.In Figure 1, a is the back plate or plates of the stove, as the casemay be. a a are rests 'formed by the projections of the lower half ofthe back plate a, which assist the eyes hh and hooks h h of Fig. 2 insupporting the watertank A when attached to the stove, as shown in Fig.3. b is a damper for regulating the passa ge of the products ofcombustion through the luesf, said damper being adjusted by the connecting-rod c1.

The recess, as shown in Fig= 1, is designed to make provision for the'middle or center flue when a three-flue stove is used. In such case anadditional plate, d, Fig. 4, is required to be used to form the back ofthe iiue up to the bottom of the tank or to the rests a a',

which additional plate d is shown in position in Fig. 6. This mode ofconstructing the lower part of the ue f2, Fig. 1, increases largely thecapacity of said flue in the stove below the tank, which flue becomes ormay become divided in the upper part thereof by means ot' the plate e,so attached as to form `a part of the back plate of the stove.

By substituting the plate e for the plate d, the back ot the stove ismade complete without the use of the water-tank.

ln the construction. of cooking-stoves having water-tanks attached tothe rear or back of the stove, provision should always be made to socontrol the escaping products of combustion, together with the heatedair, Ste., on their way tothe chimney, as to use them altogether forheating the oven, or altogether for heating water in the tank, or forboth purposes simultaneously. This I have accomplished by `myarrangement, construction, and combination, as herein set forth and bymeans of the dampers in the ue, as seen at b, Fig. 1, I can cause theentire draft to pass up on the oven side of the plate c, thereby causingmore heat to come in contact with that part of the oven-back composedot' the plate a in the back of the flue-recess than otherwise would 3 orby means of the same damper b I can cause the entire draft to pass up'in the tank side of the plate c, for the purpose of heating more rapidlythe water in the tank, or by leaving the damper b partially open I candivide the draft, sending a part up on the oven side and a part up outhe tank side of said plates. This damper b is managed by means of theconnecting-rod. c2, as

seen in Fig. 3.

The recessed'form of the back plate a a a,v

&c., presents two lateral'recesses for the side lues in the back of theoven, as they appear at f in Fig. 7. These lateral dues and the back ofthe oven are completed by means of plates like Fig. 8, f l, which areseen in position atflf in Fig. 3.

The upper part of the flue is constructed by means of the collar orsemi-collar c, Fig. 5, and the concave in the tank. The shape of o isseen at Fig. 5, and is seen in position at Fig. 3 in connection with thetank A.

It will be perceived'by an examination of Fig. 6 that the back of theoven and front of the upright flues in the back ot' the stove may becast in a single piece, and in the usual .manner, and the lateral andmiddle ilues may be in part constructed in the usual manner, except asherein stated. The extreme back plate ofthe stove may be cast in twoparts, thus: The lower half of said back plate in Fig. 6, represented bythe parts marked a. d a, may be cast together, forming a single plate,and the upper half ot' said back plate may be cast together, forming theplate a e a, as seeny in Fig. 6.

When the boiler, Fig. 2, or the tank, with its sem'rue recess f, isattached by means of its hooks h h', through the recesses h h, as seenin Fig. 6, and the semicollar e, Fig. 5, is in its place, the stove andtank are cour billed and ready for use. That partof the back ofthe stoverepresented by plate e, Fig. 6, divides the upper part of the vmiddleflue into two parts, each ot' which may be used separately or together,as circumstances may require. As already setforth, the appropriate useofthe front or back halfot' this middle lue will be regulated by thedamper b in Fig. 1.

It' stoves of but one back (shut) flue are used, the back plate oi' thestove may he cast in two parts, as suggested i-n Fig. 6, so that thelower half of the back plate may project outward two inches or morebeyond the lower edge ofthe upward half', forming an opening two or moreinches in width, nearly or quite across the hack of the stove, in whichcase the boiler or tank ilue f2, Fig. 2, will be formed by extending thesame in breadth equal to the width of the opening in or between the saidtwo back plates of' said stove. Thus two ilues will be formed, as inFig'. 6, one between the back plate ofthe stove and the back plate ofthe oven, and the other between the back plate ofthe stove and thesideof the Watertank; and said lines will be regulated and controlled bya damper situated and operated like b in Fig. 1.

Having thus fully described my said invention and improvement, and theseveral modes of applying the same, I will next proceed to specify myclaims, and what I wish to secure by Letters Patent.

I claiml. The back of' a cooking-stove, constructed with rests andrecesses, as described andi shown, for the purpose set forth.

2. The combination of a water-tank with such recessed back of saidstove, in the man-- ner and for the purpose above described.

3. The division ofthe upper'part of the flue by means of the plate e, orits equivalent, in combination with damper b, for the purpose abovedescribed.

4. The division ofthe said flue by the platel e inpFig. 6, incombination with the flue fin. the tank A, Fig. 2, for the purpose`herein described.

5. 'llie two parts of the back plate of thel stove, d and e, incombination 'with the iluef opening between them, for the purposesherein described.

6. Said several parts ot the back plate otv a cooking-stove, and theilueopening between. the Sallie, in combination with the water-tank A,constructed and arranged in the mannerl and for the purposes hereindescribed.

7. The plate e', to complete the stove Without the combination of thewatcrtank, sub'- stantially as described.

8. The damper b, in combination with the plates d and e, substantiallyas described.

BENJAMIN F. JOHNSON.

In presence oil- J OEL TIFFANY, S. V. Hnwns.

